Pneumatic differential pressure control and alarm device for air cooler of wharf tugboat

Abstract

The invention relates to the field of wharf tug equipment, in particular to an air cooling air blocking alarming device. According to a wharf tug air cooler pneumatic pressure difference control alarming device, a transmission mechanism comprises a connecting rod, a back pressure blocking piece, a pilot valve and a pushing rod, the back pressure blocking piece is connected with a pressure difference sliding piece through the connecting rod, a back pressure opening of the pilot valve is communicated with an air ejector pipe, and the air ejecting direction of the air ejector pipe is toward the back pressure blocking piece. One end of the pushing rod is connected with an action rod of the pilot valve. The other end of the pushing rod is connected with an alarming movable contact. The action rod drives the alarming movable contact and an alarming static contact to be in contact through the pushing rod to give out alarming signals. Alarming is carried out based on the fact that obvious pressure difference exists between air pressure vales at the two ends of air going in and out after air cooler blocking, the device is suitable for being used on a tug ship, false alarming caused by false operation of the contacts due to vibration of a ship body is avoided, the accuracy of the alarming device is improved, reliable guarantee is provided for tug continuous safe working, and market promotion performance is achieved.

Description

technical field [0001] The invention relates to the field of wharf tugboat equipment, in particular to an air cooler blockage alarm device. Background technique [0002] The tugboat is mainly used for the off-shore assistance tasks of large cargo ships at the wharf; the tugboat operation tasks include piloting, pushing, and towing. Since the tugboat pursues compactness, flexibility and high power, the main engine of the tugboat uses a booster system to increase the power of the tugboat. The airflow generated by supercharging must be cooled to effectively ensure the air intake density, increase the intake capacity, and increase the power supply of the main engine. [0003] The docked cargo ships are mainly loaded with ore powder, so there is a lot of dust in the air, which is likely to cause blockage of the ship's air cooler. [0004] Although the air intake of the tugboat air intake system is equipped with an air filter, it can only block the erosion of some larger debris....

AI Technical Summary

Problems solved by technology

Professional maintenance personnel can only disassemble and inspect the system once a quarter, clean up the internal adherents, and dredge the intake and exhaust passages. This method can reduce the incidence of some such failures. However, it takes a lot of time and effort to overhaul every time. At the same time, because there is no perfect and effective maintenance operation standard, the implementation of the overhaul is not targeted and blindly implemented, resulting in waste of resources. influences

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